我有一个代码，可以通过网页中的Selenium自动执行Java中的测试。代码Java贴在此问题中，此外XML的Pom和我得到的错误也贴在这里。问题是它有时不总是发生，但我不知道是什么问题。我的Chrome版本是：78.0.3904.87版。任何帮助都在此先感谢。
System.setProperty("webdriver.chrome.driver",
"C:\\Users\\afp2\\Downloads\\maven-examples-master\\maven-examples-master\\java-project\\drivers\\chromedriver.exe");
WebDriver browser = new ChromeDriver();
browser.get("http://localhost:14612/Modelo_Experto_Amazonas_TC.aspx");
browser.findElement(By.id("txtLogin")).sendKeys("andres");
browser.findElement(By.id("txtClave")).sendKeys("burocr");
browser.findElement(By.id("BLogin")).click();
if (waitForNotElement(browser, By.id("dtlFinal_imbReporte_216"))) {
browser.findElement(By.id("dtlFinal_imbReporte_216")).click();
}
browser.findElement(By.id("txt_OtrosGastos")).sendKeys("100");
Select dropdown = new Select(browser.findElement(By.id("ddlTipoCliente")));
dropdown.selectByVisibleText("DEPENDIENTE");
browser.findElement(By.id("txtNumeroDocumentoSolicitante")).sendKeys("1722714795");
browser.findElement(By.id("txt_ingresos")).sendKeys("1500");
browser.findElement(By.id("btnAceptar")).click();
然后是pom：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mkyong.hashing</groupId>
<artifactId>java-project</artifactId>
<packaging>jar</packaging>
<version>1</version>
<name>java-project</name>
<url>http://maven.apache.org</url>
<properties>
<!-- https://maven.apache.org/general.html#encoding-warning -->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.11</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.1.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-java</artifactId>
<version>3.11.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<configuration>
<mainClass>com.mkyong.hashing.App</mainClass>
</configuration>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<fork>true</fork>
<executable>C:\Program Files\Java\jdk1.8.0_201\bin\javac.exe</executable>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
<configuration>
<archive>
<manifest>
<mainClass>com.mkyong.hashing.App</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<!-- fat-jar -->
<!-- https://books.sonatype.com/mvnex-book/reference/customizing-sect-custom-packaged.html -->
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>com.mkyong.hashing.App</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<id>simple-command</id>
<phase>package</phase>
<goals>
<goal>attached</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
我有时收到的错误是：
[1573159867.544][SEVERE]: Unable to retrieve document state disconnected: received Inspector.detached event
[WARNING]
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke (Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke (Unknown Source)
at java.lang.reflect.Method.invoke (Unknown Source)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run (ExecJavaMojo.java:297)
at java.lang.Thread.run (Unknown Source)
Caused by: org.openqa.selenium.WebDriverException: disconnected: received Inspector.detached event
(Session info: chrome=78.0.3904.87)
(Driver info: chromedriver=2.35.528161 (5b82f2d2aae0ca24b877009200ced9065a772e73),platform=Windows NT 10.0.17763 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 0 milliseconds
Build info: version: '3.11.0', revision: 'e59cfb3', time: '2018-03-11T20:26:55.152Z'
System info: host: 'ECLTAMFR15', ip: '172.23.142.12', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_201'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities {acceptInsecureCerts: false, acceptSslCerts: false, applicationCacheEnabled: false, browserConnectionEnabled: false, browserName: chrome, chrome: {chromedriverVersion: 2.35.528161 (5b82f2d2aae0ca..., userDataDir: C:\Users\afp2\AppData\Local...}, cssSelectorsEnabled: true, databaseEnabled: false, handlesAlerts: true, hasTouchScreen: false, javascriptEnabled: true, locationContextEnabled: true, mobileEmulationEnabled: false, nativeEvents: true, networkConnectionEnabled: false, pageLoadStrategy: normal, platform: XP, platformName: XP, rotatable: false, setWindowRect: true, takesHeapSnapshot: true, takesScreenshot: true, unexpectedAlertBehaviour: , unhandledPromptBehavior: , version: 78.0.3904.87, webStorageEnabled: true}
Session ID: 18984819085c0b41581b1a4f7c8b5089
at sun.reflect.NativeConstructorAccessorImpl.newInstance0 (Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance (Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance (Unknown Source)
at java.lang.reflect.Constructor.newInstance (Unknown Source)
at org.openqa.selenium.remote.ErrorHandler.createThrowable (ErrorHandler.java:214)
at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed (ErrorHandler.java:166)
at org.openqa.selenium.remote.http.JsonHttpResponseCodec.reconstructValue (JsonHttpResponseCodec.java:40)
at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode (AbstractHttpResponseCodec.java:80)
at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode (AbstractHttpResponseCodec.java:44)
at org.openqa.selenium.remote.HttpCommandExecutor.execute (HttpCommandExecutor.java:158)
at org.openqa.selenium.remote.service.DriverCommandExecutor.execute (DriverCommandExecutor.java:83)
at org.openqa.selenium.remote.RemoteWebDriver.execute (RemoteWebDriver.java:545)
at org.openqa.selenium.remote.RemoteWebElement.execute (RemoteWebElement.java:279)
at org.openqa.selenium.remote.RemoteWebElement.click (RemoteWebElement.java:83)
at com.mkyong.hashing.App.main (App.java:50)
at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke (Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke (Unknown Source)
at java.lang.reflect.Method.invoke (Unknown Source)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run (ExecJavaMojo.java:297)
at java.lang.Thread.run (Unknown Source)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 12.031 s
[INFO] Finished at: 2019-11-07T15:51:07-05:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:java (default-cli) on project java-project: An exception occured while executing the Java class. null: InvocationTargetException: disconnected: received Inspector.detached event
[ERROR] (Session info: chrome=78.0.3904.87)
[ERROR] (Driver info: chromedriver=2.35.528161 (5b82f2d2aae0ca24b877009200ced9065a772e73),platform=Windows NT 10.0.17763 x86_64) (WARNING: The server did not provide any stacktrace information)
[ERROR] Command duration or timeout: 0 milliseconds
[ERROR] Build info: version: '3.11.0', revision: 'e59cfb3', time: '2018-03-11T20:26:55.152Z'
[ERROR] System info: host: 'ECLTAMFR15', ip: '172.23.142.12', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_201'
[ERROR] Driver info: org.openqa.selenium.chrome.ChromeDriver
[ERROR] Capabilities {acceptInsecureCerts: false, acceptSslCerts: false, applicationCacheEnabled: false, browserConnectionEnabled: false, browserName: chrome, chrome: {chromedriverVersion: 2.35.528161 (5b82f2d2aae0ca..., userDataDir: C:\Users\afp2\AppData\Local...}, cssSelectorsEnabled: true, databaseEnabled: false, handlesAlerts: true, hasTouchScreen: false, javascriptEnabled: true, locationContextEnabled: true, mobileEmulationEnabled: false, nativeEvents: true, networkConnectionEnabled: false, pageLoadStrategy: normal, platform: XP, platformName: XP, rotatable: false, setWindowRect: true, takesHeapSnapshot: true, takesScreenshot: true, unexpectedAlertBehaviour: , unhandledPromptBehavior: , version: 78.0.3904.87, webStorageEnabled: true}
[ERROR] Session ID: 18984819085c0b41581b1a4f7c8b5089
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
答案 0 :(得分：0)
当硒试图访问不再可用的元素时，这是一个常见的例外。
// pseudo code example:
webDriver.get("abc.com");
Element button = webDriver.findElement( button selector );
webDriver.get("xyz.com");
button.click(); // exception here
// another example:
Element button = webDriver.findElement( button selector );
// let's assume, after clicking the button
// JS performs some UI events and then removes the button from DOM
button.click(); // UI actions performed
button.click(); // exception
也许您应该尝试记录每个操作，以找到不稳定的确切行。它应该有助于进一步调查。